Magneto-electric generator



(No Model.) 2 Sheets-Sheet 1. G. H. NORTH.

MAGNETO ELECTRIC GENERATOR.

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2 Sheets-Sheet 2.

(No Model.)

0. H. NORTH. MAGNETO BLEOTRIG GENERATOR.

No. 569,385. Patented Oct. 18, 1896.

UNITED STATES PATENT GEEIcE.

CHARLES H. NORTH, OF CLEVELAND, OHIO.

MAG NETO-ELECTRIC GENERATOR.

SPECIFICATION forming part of Letters Patent No. 569,385, dated October13, 1896.

Application filed April 1 1 96- To aZZ whom it may concern.-

Be it known that I, CHARLES H. NORTH, a citizen of the United States,residing at Cleveland, in the county of Ouyahoga and State of Ohio, haveinvented certain new and useful Improvements in Magneto-ElectricGenerators, of which the following is a specification.

This invention relates to magneto-electric generators, and has for itsobject economy of construction and greater efficiency of electricalgeneration; and it consists in the details of construction andcombinations of parts substantially as hereinafter described, andpointed out in the claims.

I11 the accompanying drawings, Figure 1, Sheet 1, is an end view of mynew generator. Fig. 2 is a vertical section on line 2 2 on Fig. 1. Fig.3 is a detached view of one of the end plates which support the workingparts. Fig. 4 is a detached view of one of the poleplates. Fig. 5 is adetached view of the armature. Fig. 6 is a detached view of one of thepieces composing the laminated armature. Fig. 7, Sheet 2, is a sideelevation of thegenerator as seen contained in a box in connection witha call-ringer, showing the method of making wire connections.

In this generator two courses for the electric current are provided, anda switch mechanism operated by the laterally-reciprocatin g movements ofthe driving-shaft is used for changing the current from one course tothe other. Thus when the driving-shaft is in the normal position thecurrent is from bindingpost P, through the center spring S of theswitch, thence back through spring S, thence to the ringer, thence tobinding-post N, leaving the generator open, but when the saiddriving-shaft is pushed outward from gearwheel by the revolutions of theshaft the current will be from the binding-post P, through the centerspring S, thence through spring S thence through the armature and by theframe to return-wire direct to binding-post N, leaving theringer-circuit open, so that in calling a distant phone the local ringerwill not sound. If it is desired that both the local and distant bellsshould ring simultaneously, it is only necessary to cut the local ringerinto the main circuit between bindingpost Pand the center spring S.

A A are the end plates comprised in the Serial No. 587,560. (No model.)

framework supporting the working mechanism. These plates are stamped outof sheet metal, preferably of brass or other non-magnetic metal, withdies, and are therefore uniform in size and shape. The lower half of theside edges of said plates are made curved, and at the lower corners aremade ears or lugs a a, and at the upper ends of said curved edges .areprovided similar projections a Said ears and projections are perforatedfor the purpose of receiving the binding-rods a which join said endplates. In the top ends of said plates are made holes for the bearingsof the driving-shaft D, and at the center of the arc of said curved sideedges are made holes for the bearings of the armature-shaft.

B B are pole-plates, also stamped out of sheet metal and pressed intoform by dies. They have curved sides conforming with the curved sides ofthe end plates A, which curvature is parallel with and but slightlygreater than the circumference of the armature. At the lower sides ofthe plates B are bent flanges b, which extend at right angles, and atthe upper side of the curvature is made a short inward curve 19 abovewhich the plates eX- tend in a perpendicular line and are pierced withholes 12 The ends ofthe curved portions of the plates B have shortextensions 5 adapted to fit onto the curved sides of the plates Abetween the cars a and the projections a Now when the plates A A and B Bare placed together, the rods a are put through the eyes, and the nutsare screwed onto the ends of the rods the frame is complete.

C G O are permanent magnets placed over the pole-plates B B, with theirends standing on the flanges b b, and are secured in place by the screws0 0, passed between the magnets and screwed into the holes I). Thus themagnets, the pole-plates, and the frame are firmly bound together.

E is a laminated armature composed of a shaft 6, two end pieces 6, andthe intermediate thin pieces 6 The end pieces are stamped out ofsheet-iron and formed with broad curved ends, which are bent at rightangles to the middle cross part, as shown in Fig. 3, to form hoods, theside edges of which are on a line with the side points of the laminm.These hoods form a perfect continuation of the side edges of thearmature, completely covering the ends of the coils and perfecting themagnetic lines through the armature. The thin pieces are also stampedout of thin sheet-iron, with a center hole, like the two end pieces c,and are placed on the shaft 6 between the end pieces, and all aresecured thereon by the brass sleeves c, which occupy the spaces on theshaft between the end pieces and the end plates A.

In one end of the armature-shaft is provided a contact-pin :r, insulatedfrom the shaft, and having its inner end connected with the wirecoil onthe armature, (seen at .115 The other end of the coil is connected withthe shaft by pin a. This leads the generated current through the frameto the wire at to.

D is a driving-shaft having its bearings in the holes in the upper endsof the end plates A A over the armature.

G- is a gear-wheel placed loosely on the shaft D and meshing with apinion I on the end of the armature-shaft. In the outer end of the hubof wheel G is made an inclined recess 9, and through the shaft I) is putapin g, the ends of which bear against the inclines in said recess.

II is a sleeve placed on the shaft D, held by a set-scrcw 71 II is aspring placed on the shaft between said sleeve and the end plate A, andis designed for assisting the spring S in forcing the shaft inwardly.The spring S may, however, be made strong enough to withdraw the shaft.In such case the spring K may be dispensed with.

The switch consists of three spring-pieces S S S fixed on aninsulating-piece T on the end plate A. The spring S has a ring throughwhich an insulated head D on shaft D is passed, the flange of the headbearing against said ring. The lower end of said spring S is connectedby wire with binding-post l. The lower end of spring S is in contactwith the contact-pin {U in the armature-shift, the upper end contactingwith spring S when the shaft 1) is pushed outward by the pin g moving onthe inclines in recess 9 when the shaft is rotated.

Having described my invention, I claim 1. In aniagneto-electriegenerator, the combination with the rotary armature IE and vibratoryshaft l),of the springs EihSQSanounh ed on the end plate A, spring 5"contacting with pin X in the arinainire-shaft, spring S connected in themain circuit, spring 5 interposed between said springs t5, t5 andconnected in the main circuit, also connected with the end of thevibratory shaft I), and adapted thereby for changing the electriccurrent between said springs S, S as and for the purpose set forth.

Inainagneto-electric generator,thc combination with the rotary armatureE, of the cylinder composed of the stan'iped pole-pieces I B, having theend projections b b, the stamped plates A A, comprising heads for thecylinder, and having the perforated lugs a a and curved edges betweensaid lugs, adapted to receive the said. projections b, and. the tie-rodsa which enter said lugs, and bind the pole-pieces to the end plates,substantially as described.

(JIIARL' 5S II. NORTH.

\Vitnesses:

GEO. XV. TIBBITTS, LEWIS W. FORD.

